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Mobile phone exposure and spatial memory

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Wiholm C, Lowden A, Kuster N, Hillert L, Arnetz BB, Akerstedt T, Moffat SD · 2009

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Cell phone radiation affected spatial memory differently in sensitive versus non-sensitive users, suggesting individual EMF sensitivity influences brain responses.

Plain English Summary

Summary written for general audiences

Researchers exposed volunteers to cell phone radiation for 2.5 hours while they performed spatial memory tasks (navigating a virtual maze). Surprisingly, people who already experienced symptoms from phone use actually performed better on the memory tasks during radiation exposure, while those without symptoms showed no change. This unexpected finding suggests that radiation may affect the brain differently depending on whether someone is already sensitive to electromagnetic fields.

Why This Matters

This study reveals something fascinating and concerning about how cell phone radiation affects our brains. The researchers used an exposure level of 1.4 W/kg, which is within current safety limits but represents prolonged exposure similar to a long phone conversation. What makes this research particularly significant is the differential response between symptomatic and non-symptomatic users. The science demonstrates that people who already experience symptoms from phone use showed improved spatial memory during radiation exposure, suggesting their brains may be responding differently to electromagnetic fields. This challenges the simplistic assumption that EMF effects are uniform across all people. The reality is that individual sensitivity appears to play a crucial role in how our brains respond to radiation exposure, which has important implications for how we assess EMF safety standards that currently assume one-size-fits-all protection.

Exposure Details

SAR
1.4 W/kg
Source/Device
884 MHz
Exposure Duration
2.5 h

Exposure Context

This study used 1.4 W/kg for SAR (device absorption):

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 1.4 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Extreme Concern rangeFCC limit is 1x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 884 MHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 884 MHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

This study investigated the effects of a 2 1/2 h RF exposure (884 MHz) on spatial memory and learning, using a double‐blind repeated measures design.

The exposure was designed to mimic that experienced during a real‐life mobile phone conversation. Th...

Results revealed a main effect of RF exposure and a significant RF exposure by group effect on dista...

Cite This Study
Wiholm C, Lowden A, Kuster N, Hillert L, Arnetz BB, Akerstedt T, Moffat SD (2009). Mobile phone exposure and spatial memory Bioelectromagnetics. 30(1):59-65, 2009.
Show BibTeX
@article{c_2009_mobile_phone_exposure_and_203,
  author = {Wiholm C and Lowden A and Kuster N and Hillert L and Arnetz BB and Akerstedt T and Moffat SD},
  title = {Mobile phone exposure and spatial memory},
  year = {2009},
  doi = {10.1002/bem.20443},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.20443},
}
DOI: 10.1002/bem.20443

Cited By (50 papers)

View all 50 citing papers on Semantic Scholar

Quick Questions About This Study

A 2009 study found that 884 MHz cell phone radiation unexpectedly improved spatial memory performance in people who already experienced symptoms from phone use. Those without symptoms showed no change during 2.5-hour exposure while navigating virtual mazes.
Yes, research shows EMF-sensitive individuals respond differently to 884 MHz radiation exposure. While symptomatic people improved their spatial navigation performance during radiation exposure, non-symptomatic participants showed no performance changes in the same virtual maze tasks.
Spatial memory effects from 884 MHz cell phone radiation occurred during 2.5-hour continuous exposure sessions. The study found performance improvements in EMF-sensitive individuals throughout this exposure period while they performed virtual navigation tasks.
During 884 MHz cell phone radiation exposure, people with existing EMF symptoms traveled shorter distances in virtual mazes, indicating improved navigation efficiency. Those without symptoms showed no change in their maze navigation performance during the same exposure.
Researchers can only speculate why 884 MHz radiation improved spatial memory in EMF-sensitive individuals. The unexpected finding suggests radiation may affect brain function differently depending on whether someone already experiences symptoms from electromagnetic field exposure.